This is the 594th most frequent Chinese word.
建成
"建成" means "to complete the construction" or "to build and complete."
In this sentence, '建成' is used as a verb meaning 'to be completed or constructed' indicating that the process of construction has been finished.
这个公园去年建成了。
This park was completed last year.
Here, '建成' serves as a noun derived from a verb, referring to the event or state of having been constructed.
这座大桥的建成标志着两地交流的进一步加强。
The completion of this bridge signifies a further strengthening of the exchange between the two regions.
In this instance, '建成' is used as a verb in a future projected context, describing the anticipated completion of construction.